baber/WOPTO huggingface dataset:
Patent KR-19990044288-A (KR)
Title: 광변색성 스피록사진, 이를 함유하는 조성물 및 제품
Filed: 1996-07-22
Abstract: 본 발명은 하기 화학식 1로 표시되는 광변색성 화합물에 관한 것이다: 
     화학식 1 
     
       
     
     여기서, R 1 은 광학적으로, 적어도 하나의 이종원자 및/또는 적어도 하나의 불포화기를 포함하는 적어도 하나의 다른 지방족 및/또는 방향족 고리와 연결되거나, 브리지화되거나 또는 축합된 적어도 하나의 알리사이클릭기에 의해 형성되는 폴리사이클릭기이고, R 2 -R 7 은 다른 정의의 기일 수 있고, A는 치환될 수 있는 (헤테로)방향족 고리를 나타내며, n은 정수이다.    바람직하게, R 1 은 노르보르닐기와 같은 비대칭 바이사이클릭기이다.    상기 물질의 적용으로는 유기 중합체, 특히 렌즈와 같은 광변색적 제품들이 있다.
Patent KR-19990066961-A (KR)
Title: 골판
IPC: A61B17/70
Filed: 1997-09-15
Abstract: 본 발명은 연장된 삽입부 및 앵커링(10)나사를 수용하기 위한 각 단부에 1개 이상의 홀을 갖춘 골판을 생성한다.  골판은 다른 길이에 대해 사용 가능해야 하고 간단한 방법으로 수술 동안 연결되는 부분들의 불일치 및 수축의 가능성이 있어야 한다.  이 목적을 위해서, 삽입부는 삽입부의 수직 방향으로 연장되는 연장 홀(3, 4)을 갖춘 제 1 부분 및  보어(13, 14)를 갖고 제 1 부분(1)과 연결 가능한 제 2 부분(2)을 포함한다.  2개 부분의 나사 연결은 2개 부분을 연결하기 위한 연장 홀(3, 4)을 통해 유도되어 제공된다.  부분 중의 하나는 구성된 표면을 포함하고, 다른 한 부분은 그를 수용하는 오목부를 포함한다.  또한, 고정 부재(19)는 2개의 부분(1, 2) 서로를 기준으로 상대적 위치를 고정하는 구조와의 결합을 제공한다.
Patent KR-20000064468-A (KR)
Title: 땜납마스크조성물
IPC: G03F7/004
Filed: 1996-12-18
Abstract: 본 발명의 땜납 마스크의 제조방법은, 
     (1) 아릴 사이클릭 설포늄 쯔비터이온(1) 또는 아릴 사이클릭 설포늄 쯔비터이온과 둘 이상의 카복실 그룹을 함유하는 중합체(2)의 수용액으로 인쇄 회로판을 피복하는 단계, 
     (2) 피막의 특정 영역에 자외선을 노출시켜 노출된 영역 상의 쯔비터이온 단량체를 중합시키는 단계, 
     (3) 노출된 피막을 물 또는 알칼리성 수용액으로 현상하는 단계 및 
     (4) 현상된 피막을 경화시키는 단계를 포함한다.
Patent KR-19990077364-A (KR)
Title: 축과 기어장칙으로 결합하는 기어들을 갖는
IPC: B62M17/00
Filed: 1997-01-17
Abstract: 축(34)에  대해  적어도  하나의  기어휠(58a)을  제공하는,  축(34)은  적어도  하나의  폴부재(84)를  가지며,각  폴부재(84)는  축내  유동자석(48)의  위치설정으로  이를  관통하는  축(34)에  대해  자유회전하는  기어휠(58a)과  결합  및  분리되며,  기어휠(58a)과  폴부재(84)의  결합은  기어휠(58a)이  축(34)과  회전케  함을  특징으로  하는  기어장치가  본  발명의  내용이다.
Patent KR-19990087325-A (KR)
IPC: F16K31/12
Filed: 1997-02-26
Abstract: PCT No. PCT/SE97/00321 Sec. 371 Date Aug. 4, 1998 Sec. 102(e) Date Aug. 4, 1998 PCT Filed Feb. 26, 1997 PCT Pub. No. WO97/32151 PCT Pub. Date Sep. 4, 1997An outlet valve is arranged in the bottom of a vessel intended to be filled with liquid comprising a valve disc (1) connected to a piston rod (4) and a piston (5) actuated by a pressure medium. The valve disc (1) is movable between a first and a second position and is arranged to bear against a valve seat (2) in its first closed position. The piston (5) is arranged in an operating device (6) provided with a connection (7) to a source for pressure medium. The operating device (6) is designed as a unit sealed from the liquid and is arranged at such a distance from the valve seat (2) that the liquid, when the valve is open, passes a zone between the operating device (6) and the valve seat (2).
Patent KR-20000064619-A (KR)
Title: 연속적인 금속 롤링 또는 주조 플랜트용 롤
IPC: B22D11/06
Filed: 1998-01-07
Abstract: 본 발명은  허브 (2),  허브와 동축인 외부 셸 (3),  및 허브와 외부 셸 사이의 변형가능한 셸 (4) 로 이루어진 롤에 관한 것으로써,  변형가능한 셸 (4) 은  축 방향으로 병렬로 놓여있고 압력하에서 액체가 공급된 복수개의 링 형상 셀 (43) 로 이루어지고,  각각의 셀은  허브와 접촉하는 내부 원통형 벽 (41) 과 외부 후프와 접촉하는 외부 원통형 벽 (42) 에 의해 범위가 정해지고 그들은  방사상의 단면으로 상호 대향하여 배열된 볼록한 표면을 갖는 두 개의 변형가능한 측벽 (44, 44') 에 의해 연결되어 있다.     본 발명은  롤사이에서 연속적인 주조를 하기 위한 플랜트의 주조 롤과 적층 롤에 적용할 수 있다.
Patent KR-20000065234-A (KR)
Title: 구리산화물을구리금속으로환원시키기위한조성물및방법
IPC: C07D327/06
Filed: 1998-02-20
Abstract: 본 발명은 수지와 구리 금속과의 결합을 촉진시키기 위해 구리 산화물 층을 환원시키는 데 사용되는 조성물에 관한 것이다. 본 발명의 조성물은 시클릭 보란 화합물을 함유하는 환원제 수용액이다. 그와 같은 시클릭 보란 화합물의 예로서는 질소 또는 황 원자를 고리 형성 원자로서 함유하는 화합물, 예를 들면 모르폴린 보란, 피페리딘 보란, 피리딘 보란, 피페라진 보란, 2,6-루티딘 보란, 4-메틸모르폴린 보란 및 1,4-옥사티안 보란 및 N,N-디에틸아닐린 보란을 들 수 있다.
Patent KR-20000054888-A (KR)
Inventor: CHOI HONG ROK
IPC: H01L21/20
Filed: 1999-02-01
Abstract: PURPOSE: A longitudinal type low pressure chemical vapor deposition equipment is provide to prevent a damage of the wafer boat by having a cover at an upper portion of a wafer boat. CONSTITUTION: A longitudinal type low pressure chemical vapor deposition equipment comprises a flange of which an upper and lower portion is opened, an outer longitudinal tube(OT) which is closely contacted with an upper opening of the flange and of which an upper end is closed, an inner longitudinal tube(IT) which is disposed at an inside of the outer longitudinal tube and of which an upper and lower portion is opened, a protrusion which is projected from an inside wall of the flange to be contacted with a lower opening of the inner longitudinal tube, a gas exhausting port(GO) and a gas injecting port(GI) which are passed through a desired area of a side wall of the flange and respectively disposed at an upper and a lower portions of the protrusion, a heater(H) which encloses a circumference of the longitudinal outer tube, a wafer boat(B) which is loaded to a space enclosed by the longitudinal inner tube, and a cover(CV) for covering an upper portion of the wafer boat.
Patent KR-20000055396-A (KR)
Inventor: KWON JANG HYUN
IPC: G03G5/00
Filed: 1999-02-05
Abstract: PURPOSE: A coating solution compound for a charge generating layer and photosensitive body with an electro-photographic method is provided to enhance a dispersion stability by being dispersed using a ball-mill, a sand-mill and a paint-shaker and having a part of an upper layer of a solution. CONSTITUTION: A coating solution compound is adopted to a printer with an electro-photographic method, a laser printer and a photosensitive body for a facsimile. A compound to be made of a charge generating material pigment, a combining resin and an organic solvent is milled, and a centrifugal separation is processed. A particle which is more than 3 times of a size of a mean particle is removed, and the coating solution compound having an excellent dispersion stability and an excellent electrostatic characteristic is formed.
Patent KR-20000059947-A (KR)
Inventor: KIM GYEONG TAE
IPC: H05B6/64
Filed: 1999-03-10
Abstract: PURPOSE: A microwave calorific material is provided to have good heating properties by selecting suitable calorific material and far infrared ray generating material. CONSTITUTION: Silicon carbide having a formability and degree of sintering is used as a calorific material which can generate heat on microwave radiation. Powder of silicon carbide is mixed with pottery stone powder which generates far infrared ray in a high temperature and has a good formability. The mixture is mixed with print as a material for maintaining the form of the mixture and a suitable amount of pigment. The mixture is formed according to the usage. For example, when used in a fomentation pack to obtain a thermal effect by fomentation and a far infrared effect, the mixture is formed into balls having diameters of about 8 to 10mm. These balls are sintered in an electric furnace in a temperature of about 1000 to 1200 centigrade for about 2 hours.
Patent KR-20000061124-A (KR)
Title: Impact absorbing floor of oilpaper to solve or reduce problem of vibration and noise between floors in apartment house
Inventor: LEE CHANG JIN
IPC: B32B5/08
Filed: 1999-03-18
Abstract: PURPOSE: A floor of oilpaper which can absorb an impact power generating the vibration and noise between floors in an apartment house is provided, thereby the residents can get along well with their neighbors. CONSTITUTION: A floor of oilpaper is produced by absorbing boiled water containing polyvinyl alcohol plus aqueous boric acid into network shaped fibers(1) under the coating part showing the color of the floor of oilpaper to render elasticity to the network shaped fibers and filling vacant spaces with vinyl to level the top and bottom surfaces in order to absorb an impact power by elasticity.
Patent KR-20000061720-A (KR)
Inventor: KIM GANG U
IPC: E04B1/348
Filed: 1999-03-30
Abstract: PURPOSE: A pre fabricated bathroom is provided to reduce load of building and to shorten construction period while employing a monolithic wall. CONSTITUTION: A pre fabricated bathroom(20) is configured in that a retaining wall is installed at one surface of the bathroom, a water-resistant frame(30) is mounted onto a bottom slab(1), water-resistant plate(40) having a pipeline is installed onto the water-resistant frame, a single unit wall(50) is installed at edges of the three surfaces of the bathroom excluding the retaining wall, a lower bracket(62) is employed for fixing the single unit wall to the water-resistant frame while an upper bracket(61) is employed for fixing the single unit wall to a ceiling slab(2), a bracket(63) is assembled into a ceiling panel mount groove of the single unit wall, a ceiling panel is mounted to the groove assembled with the bracket(63), and a wall paper or paint is applied to the retaining wall and an outer surface of the single unit wall.
Patent KR-19990082974-A (KR)
Title: 칩 제거 기계 가공용 공구
IPC: B23D43/02
Filed: 1999-04-06
Abstract: 본 발명은 홀더(11)와 다수의 절결 삽입체(12)를 포함하는 금속 칩 제거 기계 가공용 리머에 관한 것이다.  홀더는 다수의 삽입 포켓(22)을 포함하며, 절결 삽입체는 홀더로부터 실질적으로 연속 증가 돌출부를 구비한 라인을 따라 제공된다.  리머(10)는 공급 방향(F)을 갖는다.  리머(10)는 스프링 장착 클램프(15)가 절결 삽입체를 삽입 포켓(22)의 지지면(21)에 대해 가압하기 위해 제공된 각 절결 삽입체(12)용 체결 수단을 포함한다.
Patent KR-20000073179-A (KR)
Inventor: SEO YONG UN
IPC: H01H1/50
Filed: 1999-05-07
Abstract: PURPOSE: A touch panel is provided to improve the productivity and to reduce a cost by removing a photo lithography process requiring a long period of time. CONSTITUTION: A touch panel comprises a double-faced tape(7) which attaches a transparent film, on which a transparent conduction film is formed, with a lower substrate(6). An electrode(8) applies a voltage from the exterior to the transparent conduction film and measures a voltage to sense the coordinate of a pushed position. A double-faced tape(3) attaches and insulates an upper substrate and the lower substrate. A dot spacer(5) maintains an interval between transparent conduction films of the substrates. The touch panel comprises an electrode(9) for connecting the upper and lower parts. The electrode(9) for connecting is obtained as follows. After forming a metal electrode on a transparent plastic substrate, a transparent film is attached on the metal electrode by use of a double-faced tape. The transparent conduction film and the electrode are connected by opening the conduction film and the transparent tape and filling the opened portion with a metal material.
Patent KR-20000074807-A (KR)
Inventor: HAN JONG CHUL
IPC: B01D46/00
Filed: 1999-05-26
Abstract: PURPOSE: Provided is a rotation type cleaning collector having a turbo impeller, which can effectively clean dusts, rancidity, acids, and gas. CONSTITUTION: In the cleaning collector(100), combustion gas is inflowed into a casing(101) through a gas inlet(107), simultaneously cleaning water is injected in the casing(101), and then the combustion gas is contacted with the turbo impeller(104) through a first and a second venturi part(117,118), and passed among a plurality of blades of the turbo impeller(104), and impacted against a protrusion plate(130), and passed through a water tank(102), after repeating the process the gas exhausted through an outlet(108).
Patent KR-19990073200-A (KR)
Title: 자동약품투입방법
IPC: G01F11/00
Filed: 1999-06-21
Abstract: 본 발명은 상수처리장의 정수설비, 화학 제품 생산 공장, 제약 회사등과 같이 화학 약품을 사용하는 곳에서 대상 물질에 약품 투여시 정확한 양의 약품을 투여하도록 함과 아울러 원격지로부터의 약품 투여량의 변화시 이를 즉각적으로 반영할 수 있도록 하는 자동 약품 투입 방법에 관한 것이다. 
     따라서, 본 발명은 유량계의 측정값을 읽어들여 약품을 투입할 대상 물질의 유입 여부를 판단하는 제 1 과정; 상기 판단 결과 대상 물질이 유입되면 유량계 측정값에 대한 밸브의 궤도값을 메모리로부터 읽어들이는 제 2 과정; 밸브의 궤도 보정값이 입력되는가를 판단하는 제 3 과정; 상기 밸브 궤도 보정값이 입력되면 현재 읽어들인 밸브의 궤도값과 밸브 궤도 보정값을 함께 연산하고, 그 값에 따라 밸브의 궤도를 조절하여 약품 투입량을 제어하는 제 4 과정; 상기 밸브 궤도 보정값이 입력되지 않으면 읽어들인 밸브 궤도값에 따라 약품 투입량을 제어하는 제 5 과정으로 이루어진다. 
     이로인해 약품을 혼합하는 혼합통 내부에 혼입되는 약품의 농도를 정확히 측정할 수 있고, 또한 그 측정 결과에 따라 항상 적정량의 약품이 투입될 수 있도록 하는 효과가 있으며, 현장의 상황을 감안하여 투입되는 약품의 농도를 현장의 제어반이 아닌 원격지에서도 이를 즉각적으로 반영하여 약품의 투입량을 조절할 수 있다.
Patent KR-20010003270-A (KR)
Inventor: KANG MIN SU
IPC: H04B7/155
Filed: 1999-06-22
Abstract: PURPOSE: A receiver in a base transceiver station using a propagation mode sharing filter in a communication system is provided to improve the performance of a receiver by embodying diversity using a propagation mode sharing filter so that received signals can have multiple receiving paths. CONSTITUTION: A propagation mode sharing filter(1) separates signals received from a receiving antenna(ANT) so that they can have different receiving paths according to propagation modes. The first LNA(Low Noise Amplifier)(2-1) and the second LNA(2-2) carry out low noise amplification for the signals received through the receiving paths separated by the propagation mode sharing filter(1). The first down converter and baseband card(3-1) and the second down converter and baseband card(3-2) carry out down conversion for the frequency of the signals amplified by the first LNA(2-1) and the second LNA(2-2) and converts the signals into baseband signals. A multiplexer(4) multiplexes the signals converted by the first down converter and baseband card(3-1) and the second down converter and baseband card(3-2) and outputs them to a channel card(5) in a base transceiver station.
Patent KR-20000006362-A (KR)
Inventor: DAVID K HALLER
IPC: F01C1/02
Filed: 1999-06-22
Abstract: PURPOSE: A scroll compressor which needs a small installation area without reducing the cooling capacity and does not have a noise is provided. CONSTITUTION: The scroll compressor is formed by:a fixing scroll member(56) having a flat surface(66), a spiral bulk board(68) projected from the surface(66) and a couple of rectangular grooves(212, 214) inclined and paralleled; a flat surface(74); a spiral bulk board(76) projected from the surface(74); and a rotary orbital scroll member(58).
Patent KR-20000006504-A (KR)
Inventor: RABICRISHI NAMURTI
IPC: H04N19/593
Filed: 1999-06-26
Abstract: PURPOSE: The method and apparatus relating to an image processing system is to dissect the image zone into blocks or regions based on the relative importance of regions and assign corresponding bits to suit the encoding environments of information in order. CONSTITUTION: The method and apparatus are to dissect the image zone based on the existence of human skin-color detector, when applying to a video-phone. The face of the speaker is displayed as an important region of the frame of image sequence. The detection of facial blocks in a frame is made on the color plane. Then, the resultant information of importance on the whole image is gathered to be shown as an important map or class map. The method has the steps of: mapping the color components of the current image zone on the color plane; defining the determined zone by four straight lines on the color plane; dissecting the image zone into skin-color blocks if the color components correspond with the determined zone.
Patent KR-20000016910-A (KR)
Title: Washing machine
Inventor: BANBA YOSHIKAZU
IPC: D06F33/02
Filed: 1999-07-08
Abstract: PURPOSE: A washing machine is provided to generate appropriate bubbles inside a washing tub by appropriately controlling the generation of bubbles inside the washing tub, to prevent the leakage of bubble to the outside of the tub, and to smoothly perform a washing operation not by obstructing the moving of a dehydrating operation. CONSTITUTION: The washing machine is equipped: washing tubs(3, 6) accepted the washing, and stored the water for washing; current generators(9, 16) to generate the current inside the washing tubs(3, 6); an air supply device(28) to generate bubbles inside the washing tubs(3, 6) by sending the air into the washing tub(3, 6) from an introducing hole(38) of air installed in the lower part of the washing tubs(3, 6); the air supply device(28) driven to control the generation of bubbles inside the washing tubs(3, 6).
Patent KR-20010011644-A (KR)
Inventor: NOH MYEONG GI
IPC: H04B1/38
Filed: 1999-07-29
Abstract: PURPOSE: A device for controlling a power saving in a cordless hands free kit is provided to minimize a power consume, to intercept a voice signal inputted through a micro phone when the voice signal is output through the speaker, so as to remove an echo phenomena caused by an acoustic coupling and to use a jack for earphones put in a body, so as to remove troubles of attaching and detaching the jack. CONSTITUTION: A cable(111) interfaces a portable terminal with a hands free kit. A CODEC(112) converts a transmitted analog signal(TXA) into a digital signal(PCM-TX), and converts a digital signal(PCM-RX) transmitted through the cable(111) into an analog signal(RXA). A switch(113) selectively switches the analog signal(RXA) transmitted from the cable(111) and the CODEC(112) according to a control of a switching select controller(123). An amplifier(114) amplifies the analog signal, and outputs the amplified analog signal to a speaker(101). A signal level detector(115) detects a level of the analog signal. An inverter(116) inverts an output signal of the signal level detector(115). A timer(117) keeps the output signal of the signal level detector(115) for a determined time. A switch(118) switches a power supplied from a battery according to the output signal of the timer(117). A power converter(119) converts the power applied from the switch(118) into a power suitable for a hands free kit. An amplifier(120) amplifies the analog signal inputted through a micro phone(102). A switch(121) is controlled by the output signal of the inverter(116), and switches the amplified analog signal. A switch(122) selectively switches the analog signal to the cable(111) and the CODEC(112) according to the switching select controller(123). The switching select controller(123) controls switching directions of the switches(113,122) according to a control command inputted from an exterior.
Patent KR-20010018463-A (KR)
Title: Mobile wireless terminal for reducing current consumption of battery
Inventor: LEE BYEONG GUK
IPC: H04B1/40
Filed: 1999-08-19
Abstract: PURPOSE: A mobile wireless terminal for reducing a current consumption of a battery is provided to intercept power supplies of a resonator and a voltage controlled temperature compensate crystal oscillator(VCTcxo) in a receiving standby state, so as to reduce the current consumption of the battery to lengthen a battery using time, and to minimize or lighten the battery. CONSTITUTION: A controller(10) outputs a power intercepting signal of a resonator(14) and a power off switching control signal of a voltage controlled temperature compensate crystal oscillator(VCTcxo)(12) in a receiving standby state, and checks a phasing channel slot period in the receiving standby state, then outputs a power supply signal of the resonator(14) and a power on switching control signal of the VCTcxo(12). A switch(18) intercepts a power of the VCTcxo(12) by the power off switching control signal of the controller(10).
Patent KR-20010025890-A (KR)
Title: Pressure switch
Inventor: LEE CHUNG JIN
IPC: H01H35/24
Filed: 1999-09-01
Abstract: PURPOSE: A pressure switch is provided to improve the efficiency of the pressure switch by making one side of an L-shaped pipe a shaft and vertically installing the shaft to a hooter surface and rotating the other side of the L-shaped pipe. CONSTITUTION: A ventilating opening pipe(1) is installed at the central portion of a pressure chamber hooter(2). The ventilating opening pipe(1) is inserted into a flange portion of the hooter by interposing an oil seal so as to accomplish the water proof. A bush nut prevents the ventilating opening pipe(1) from being deviated from the hooter(2). The pipe(1) can be freely rotated about a shaft even when the hooter(2) is fixed. One side of an L-shaped pipe having a ventilating opening becomes a shaft. The shaft is vertically installed on the hooter surface by interposing a seal material to the pressure chamber hooter.
Patent KR-20010026749-A (KR)
Inventor: BANG JIN WON
IPC: H04Q1/30
Filed: 1999-09-08
Abstract: PURPOSE: An apparatus and a method for generating an interrupt between processors in a communication system are provided to use a common SRAM as a temporary data storage, so as to speedily transceive massive storage data. CONSTITUTION: The first processor(21) and the second processor(22) are mounted on a packet processor used in a wireless data network interworking device. A memory(20) temporarily stores data transceived between the first/second processors(21,22). The first interrupt generator(23) receives an interrupt request signal from the first processor(21) and decodes an address related to an interrupt request, then transmits the interrupt request signal to the first interrupt pending register(25) and the second processor(22). The first interrupt pending register(25) stores an interrupt pending state or an interrupt state which is generated in the first interrupt generator(23). The first interrupt pending register(25) informs the first processor(21) of an interrupt pending state or an interrupt state of the second processor(22). The second interrupt generator(24) receives an interrupt request signal from the second processor(22), and decodes an address relating to an interrupt request, then transmits the interrupt request signal to the second interrupt pending register(25) and the first processor(21). The second interrupt pending register(26) stores an interrupt pending state or an interrupt state which is generated in the second interrupt generator(24). The second interrupt pending register(26) informs the second processor(22) of an interrupt pending state or an interrupt state of the first processor(21).
Patent KR-20010025130-A (KR)
Inventor: KIM HUI SU
IPC: H01G4/00
Filed: 1999-09-16
Abstract: PURPOSE: A metallic oxide electrode for a super capacitor and a method for making the same are provided to improve the characteristic of microwave by having a high capacitance. CONSTITUTION: A metallic oxide electrode for a super capacitor is prepared a compound of manganese oxide, conductor and binder. A content of manganese oxide composed of 2 0-5 by wt%. A content of conductor is composed of 30-90 by wt%. A manganese oxide have a manganese dioxide comprising potassium. A content of binder is composed of 50-5 wt%. In a method for making metallic oxide electrode for a super capacitor is set forth below. A potassium permanganate is powdered a particle in detail. An electronic heater is up a determined temperature. A potassium permanganate is decomposed for predetermined times. A reactant is suddenly cooled and then is washed and filtered. A reactant mixes with a conductor, binder and solvent.
Patent KR-20010036400-A (KR)
Inventor: KIM DAE YEONG
IPC: H01L21/60
Filed: 1999-10-08
Abstract: PURPOSE: An apparatus for bonding adhesive tape is provided to improve reliability of a semiconductor chip package, by preventing a void generated between the adhesive tape and a semiconductor chip in bonding the adhesive tape to the semiconductor chip. CONSTITUTION: A vacuum hole(13) is formed in a body(12) of a collet(11) to absorb adhesive tape(23) with vacuum. The central portion of the body of the collet is protruded more than the edge portion of the body of the collet. The vacuum hole is formed in a position corresponding to the edge portion of the adhesive tape.
Patent KR-20000029088-A (KR)
Inventor: UCHITA KIMIO
IPC: H01F1/057
Filed: 1999-10-14
Abstract: PURPOSE: An R-T-B sintered permanent magnet is provided to have high performance enough to be used for the purpose needing high Br and high(BH)max. CONSTITUTION: An R-T-B sintered permanent magnet is composed of main composition containing 28-33wt% of R and 0.5-2wt% of B and inevitable impurities. 0.01-0.06wt% of M1(at least one sort of elements selected from the group composed of Nb, Mo, W, V, Ta, Cr, Ti, Zr, and Hf) and/or 0.01-0.3wt% of M2(at least one sort of elements selected from the group composed of Al, Ga, and Cu) are contained as main compositions. A brand method for mixing two sorts of R-T-B alloy powder of different content is used to prepare the permanent magnet. Then, the total amount of R elements in the composition of the R-T-B alloy powder is the same as the respective alloy powder. The crystal structure of the R-T-B sintered permanent magnet has an R2T14B typed columnar crystal particle(1) and a crystal grain phase(2). Then, the R-T-B sintered permanent magnet has a particular distribution of density of Dy on the columnar crystal particle and the crystal grain phase.